Valve.



N0. 7|2,26.8 Y Patented 00L 28, |902.

' J. vJ. T.` DEHEKK'ER.

V A L V E (Application mea oct. 30,. 190i.)

7de-7&7# XIIIe/ie UNITED STATES PATENT OFFICE.

JOI-IN J. DEIIEKKER, OF AST..LOUIS, MISSOURI.

VALVE.

SPECIFICATIONforming part of Letters Patent No. 712,268, dated October 28, 1902, Y Application iiled October 30, 1901. Serial No. 80.496. (No modelJ To all whom t may concern:

Beit known that I, JOHN J. T. DEHEKKER, a citizen of the United States, residing in the city of St.,Louis, in the State of Missouri,

have invented certain new and useful Improvements in Valves, of which the following is a full,clear, and exact descriptiomreference l lment to or past a dead-center, so thatthe zol valve is effectually seated and maintained to its seat without the necessity of a spring or other means for retaining it.

The valve is designed for use eitherinconnection with a loat or as a hand-operated valve. Y My invention consists in features of novelty hereinafter fully described, and pointed out in the claim.

Figure I is a perspective view of the valve. Fig. II is an enlarged vertical sectional viewtaken on line II Il, Fig. I. Fig. III is a view, partly in elevation and partly in vertical section, taken on line III III, Fig. II. Fig. IV is a detail view of the valve-carrying-member.

l designates a valve-frame provided with a vertical post 2 of semiciroular shapeand having at its upper end an overhanging head 3.

4 is the outlet-neck carried by the valveframe and surmounted by a slotted upright 5. The valve-frame is mounted on and attached to the nipple 6 ofthe supply-pipe?.

8 designates a lever rockingly pivoted in the s lotted upright 5 and having its inner arm 9 positioned to extend from said post in a direction toward the post 2 of the valve-frame; The lever 8 is adapted to receive the attachment of a rod lO to carry a suitable oat, or'

it may be provided with a suitable handle, as shown by dotted lines in nFig. II, by which the valve may be moved to seat or unseat the valve hereinafter described.

11 designates avalve-carryin g member that contains a valve l2, adapted to seat on the nipple 6 of the supply-pipe when lowered thereto, and projecting upwardly from said member 11 is a vertical guide-stem 13, that is positioned against the inner face of the framepost 2, so as to ride in contact therewith and guide the member l1 in the rise and fall of said member.

14: designates an adjustable knuckle provided with screw-thread connection to the post-head 3, in which it is mounted, so as to be capable of vertical adjustment in said head. 15 is an upper toggle-link, pivoted at l6`to the knuckle 14, and 17 is a lower toggle-link,

V of the armi) vof the lever 8, whereby movement of said toggle-links isprovided for in the movement of said lever. The upward throw of the lever-arm 9 exerts a pull upon the toggle-links 15 and 17 at their hinged connection, and thereby a compound motion is imparted to said parts to raise the valve-carrying member l1, suspended therefrom, and unseat the valve 12, whereas a reverse movement of the lever-arm in a downward direction carries the toggle-links into alinement with each other and forces the valve-carrying member downwardly to seat the valve in an effectual manner.` The downward throw of the lever-arm 9 causes the pivot between said arm and the yoke 20 to be moved to a deadcenter with relation to the pivot on which the lever is mounted, as seen in Fig. II, so that the holding of the valve seated, obviating the necessityfor'additional retaining parts.

` By adjustably mounting the knuckle 14 in t-he post-head 3 said knuckle may be raised or lowered to any desired degree in order to increase or shorten the distance between said knuckle and the nipple 6, so that the parts may be accurately positioned to carry the valve 12 to its seat on said nipple and cause roo ride in contact therewith, and a pvotalymounted operating-lever having connections With said toggle-links.

JOHN J. T. DEHEKKER, In presence of E. S. KNIGHT, M. P. SMITH.

with a semicircular 'post having an overhangng head, a pair of toggle-links suspended from said head, a valve-carryn g member having connection with said toggle-links, a. guide- 5 stem projecting upwardly from said member and having a convex outer face positioned against the inner face of said post, so as to 

